package com.pavlinic.mylisp.javaLibrary;

import com.pavlinic.mylisp.Expression;
import com.pavlinic.mylisp.NullExpression;


public class Equality {
	public static boolean equals(Expression x, Expression y) {
		return x.equals(y);
	}
	public static boolean isNull(Expression x) {
	  return x.equals(NullExpression.INSTANCE);
	}
}
